I wonder if there's a simple way to specify the default
values so that when i call a function designed to receive
an int and a double, i can specify the first but not the
latter. Something like:
int foo (int i, double d) {...}
but invoked by
int a = foo (5);
In Java that was done by simply overloading the
methods and using a bunch of similar definition, calling
each other. Is there a nicer solution?
--
Vänligen Kerstin Viltersten
(The Cool Giraffe) 6 1371
On 5月12æ—¥, 下åˆ3æ—¶41分 , "The Cool Giraffe" <giraf...@vilte rsten.comwrote:
I wonder if there's a simple way to specify the default
values so that when i call a function designed to receive
an int and a double, i can specify the first but not the
latter. Something like:
int foo (int i, double d) {...}
but invoked by
int a = foo (5);
In Java that was done by simply overloading the
methods and using a bunch of similar definition, calling
each other. Is there a nicer solution?
--
Vänligen Kerstin Viltersten
(The Cool Giraffe)
int foo(int i, double d=0.0)
{
// ...
}
int a = foo(5);
kingfox wrote/skrev/kaita/popisal/schreibt :
On 5?12?, ??3?41?, "The Cool Giraffe"
<giraf...@vilte rsten.comwrote:
>I wonder if there's a simple way to specify the default values so that when i call a function designed to receive an int and a double, i can specify the first but not the latter. Something like:
int foo (int i, double d) {...}
but invoked by
int a = foo (5);
In Java that was done by simply overloading the methods and using a bunch of similar definition, calling each other. Is there a nicer solution?
-- Vänligen Kerstin Viltersten (The Cool Giraffe)
int foo(int i, double d=0.0)
{
// ...
}
int a = foo(5);
Ah, that was really nice. Thanks.
However, i wonder if one should do the "double d = 0.0"
assignment in the header file, the cpp-file or perhaps
both? Which would be recommended? Which is legal?
--
Vänligen Kerstin Viltersten
(The Cool Giraffe)
Hi,
However, i wonder if one should do the "double d = 0.0"
assignment in the header file, the cpp-file or perhaps
both? Which would be recommended? Which is legal?
It is better to declare it in the header file so that statements that
use the default assignment in other translations units will compile.
Cheers
Ah, that was really nice. Thanks.
>
However, i wonder if one should do the "double d = 0.0"
assignment in the header file, the cpp-file or perhaps
both? Which would be recommended? Which is legal?
Sorry, I made a bad example. The better should be:
// in the header
int foo(int i, double d = 0.0);
// in the .cpp
int foo(int i, double d)
{
...
}
On May 12, 6:30 pm, "The Cool Giraffe" <giraf...@vilte rsten.com>
wrote:
kingfox wrote/skrev/kaita/popisal/schreibt :
On 5?12?, ??3?41?, "The Cool Giraffe"
<giraf...@vilte rsten.comwrote:
I wonder if there's a simple way to specify the default
values so that when i call a function designed to receive
an int and a double, i can specify the first but not the
latter. Something like:
int foo (int i, double d) {...}
but invoked by
int a = foo (5);
In Java that was done by simply overloading the
methods and using a bunch of similar definition, calling
each other. Is there a nicer solution?
--
Vänligen Kerstin Viltersten
(The Cool Giraffe)
int foo(int i, double d=0.0)
{
// ...
}
int a = foo(5);
Ah, that was really nice. Thanks.
However, i wonder if one should do the "double d = 0.0"
assignment in the header file, the cpp-file or perhaps
both? Which would be recommended? Which is legal?
The only way to do it is place it in the first place the function or
method is defined. This applies to template default parameters as
well.
It makes no sense in C++ to define methods in a non-header file to be
invoked in a different file.
The default parameter affects how the functions are called, not how
the compiler generates code for the functions.
kingfox wrote/skrev/kaita/popisal/schreibt :
>Ah, that was really nice. Thanks.
However, i wonder if one should do the "double d = 0.0" assignment in the header file, the cpp-file or perhaps both? Which would be recommended? Which is legal?
Sorry, I made a bad example. The better should be:
// in the header
int foo(int i, double d = 0.0);
// in the .cpp
int foo(int i, double d)
{
...
}
Got it. Thanks to all.
--
Vänligen Kerstin Viltersten
(The Cool Giraffe) This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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